Biology

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Across
  1. 5. Specialized structure within a cell (e.g., mitochondria, nucleus)
  2. 7. The variety of plant and animal life in a habitat
  3. 8. One of two or more variants of a gene
  4. 9. A protein that acts as a catalyst to increase the rate of chemical reactions
  5. 10. Organism with complex cells containing a nucleus and specialized organelles
  6. 12. The total mass of organisms in a given area
  7. 13. Structure made of protein and DNA found in the nucleus
  8. 14. A permanent alteration in the DNA sequence
  9. 15. A segment of DNA that codes for a specific trait
Down
  1. 1. Change in the allele frequencies of a population over generations
  2. 2. A large community of vegetation and wildlife adapted to a specific climate
  3. 3. (Deoxyribonucleic Acid): The molecule carrying genetic information for development and functioning
  4. 4. The basic structural and functional unit of all living organisms
  5. 6. The process where organisms better adapted to their environment tend to survive and produce more offspring
  6. 11. Single-celled organism lacking a membrane-bound nucleus (e.g., bacteria)